<?xml version="1.0"?><block><name>Gen Test AB</name><key>gsm_gen_test_ab</key><import>import grgsm</import><make>grgsm.gen_test_ab()</make><sink><name>bursts_in</name><type>message</type><optional>1</optional></sink><source><name>bursts_out</name><type>message</type><optional>1</optional></source></block>